| error[E0426]: use of undeclared label `'x` | |
| --> $DIR/hygienic-label-1.rs:2:19 | |
| | | |
| LL | () => { break 'x; } | |
| | ^^ undeclared label `'x` | |
| ... | |
| LL | 'x: loop { foo!() } | |
| | ------ in this macro invocation | |
| | | |
| = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0426`. |